Celebrate Oktoberfest at Red Robin with these 2 extra-special items: The Oktoberfest Burger is a one-of- a-kind burger features a pretzel bun packed with Black Forest ham, melted Swiss cheese and sharp beer mustard onions. It takes you to the streets of Germany without the baggage fees. Match the Oktoberfest Burger with a Samuel Adams Oktoberfest Milkshake, a delicious for adults-only milkshake featuring Samuel Adams beer—it’s like a root-beer float with a kick! * Offer details may vary and may not be available at all locations. Visit retail location for full details.